How to Spot and Avoid Tech Support Scams
That popup claiming your computer is infected and demanding you call a number is almost always a scam.
A common scam involves a browser popup, sometimes accompanied by an alarming sound, claiming your computer is infected with a virus and instructing you to call a phone number for "support." These popups are fake, regardless of how official they look, and no legitimate company — including Microsoft — monitors your computer and pops up warnings like this.
If you see one, don't call the number. Close the browser tab, or if it won't close, use Task Manager to force-close the browser entirely. Never grant remote access to your computer to anyone who called you unexpectedly or who you reached through a popup, ever.
If a staff member has already called one of these numbers and granted remote access, disconnect the machine from the network immediately and have your IT provider check it over before reconnecting it.
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